Take Huawei Mate 30 mobile phone as an example:

1. Set the photo in the gallery as wallpaper

1. Enter the gallery and find the picture you like.

2. Click the four-dot icon > Set as > Wallpaper, and follow the on-screen prompts to complete the settings.

2. Use the built-in wallpaper

1. Go to Settings > Desktop and Wallpaper > Wallpaper.

2. Select a picture.

3. Choose according to your needs:

Blur: Make the wallpaper appear blurry and blurred. Slide the slider to adjust the degree of blur.

Eye icon: Preview the effect. You can also click to scroll so that the wallpaper slides with the screen.

4. Click Apply and choose to set it as lock screen, set as desktop or both.